RKI Instruments GD-70D Series User Manual

- 116 - GD-70D
11
Troubleshooting
This guide discusses frequently-seen malfunctions but does not discuss all malfunctions. If the detector
shows a symptom which is not explained in this manual, or if it still has malfunctions even though remedial
actions are taken, please contact RKI.
NOTE
To use the pyrolyzer unit (PLU-70), also refer to the individual operating manual.
<Device Abnormalities>
Symptom/Display FAULT Causes Actions
Detector does not
turn ON
-
The power switch is turned off.
Turn ON the power switch.
Abnormalities/momentary
blackout of power supply
system.
Provide the rated voltage.
Check the UPS, power supply line filter and
insulation transformer, and then take additional
measures.
Improper installation of the
main unit.
Ensure the main unit is properly attached to the
mounting plate.
Cable abnormalities (open
circuit/not connected/short
circuit).
Check the detector’s wiring and the wiring of
connected devices.
Abnormal
Operations
○
Disturbances by sudden surge
noise, etc.
Turn off and restart the detector.
If such a symptom is observed frequently, take
appropriate measures to eliminate the noise.
Incorrect Flow Rate
Indicator (Specified
Value Display does
not correspond to
0.5 L/min.)
○
Improper flow rate default set.
Use a flow meter to perform the flow rate default
set again as described on page 111.
If such a symptom is observed frequently, the
flow sensor is malfunctioning and must be
replaced. Please contact RKI.
Sensor Unit
Abnormalities
E-1 SENSOR
●
The sensor unit is not
connected or improperly
connected.
Check whether the sensor unit is connected and
the connectors of the unit are securely fastened.
Errors in communication with
the sensor unit.
Replace the sensor unit as described on page
112.
Zero drift caused by
environmental changes or
aging degradation cannot be
corrected using the zero
follower.
Perform a zero adjustment.
If the symptom continues, replace the sensor
unit as described on page 112.
For ESU type sensors, the
battery inside the sensor is
dead.
Replace the battery inside the sensor unit as
described on page 112.
Faults inside of the sensor
unit.
Replace the sensor unit as described on page
112.
●: Lamp on
○: Lamp off

RKI Instruments GD-70D Series Specifications

General

Brand	RKI Instruments
Model	GD-70D Series
Category	Gas Detectors
Language	English